Hook-setting machine



May 27, 1930'. M. N. BRAY HOOK SETTING MACHINE Filed $118 24, 1929 5dFig.4; Fig.5.Fig15.

Fig.2. Fig.3.

Patented May 27, 1930 EJNITED STATES PATENT oFFicE MELLEN N. BRAY, 013BOSTON, MASSACHUSETTS, ASSIGNOR T TUBULAR RIVET 86 STUD COMPANY, 011'BOSTON, MASSACHUSETTS A CORPORATION OF MASSACHUSETTS HOOK-SETTINGMACHINE Application filed June 24,

This invention relates to hook-setting machines and is herein disclosedas embodied in a machine comprising, among other features, a form ofmechanism similar to that illustrated and described in U. S. LettersPatent No. 811,840 granted February 6, 1906, on application of P. R.Glass.

A machine of the type illustrated in part in the above-mentioned patentcomprises an anvil carried by a vertically movable plunger, the anvilbeing formed to occupy the throat of a lacing-hook transferred to itfrom a. raceway, and being moved thereafter, by the plunger, to insertthe barrel of the hook into the work and to upset and clench theinserted barrel against a complemental tool. These results are followedby retraction of the plunger from-the Work to place the anvil again inline with the delivery end of the raceway so that another lacing-hookmay be transferred from the raceway to the anvil.

In a machine of the type under consideration, it is necessary to providemechanism for retracting the anvil from the throat of the clenchedlacing-hook prior to the motion by which the anvil is returned to itshook-receiving position adjacent to the delivery end of the raceway,since otherwise the head of the clenched lacing-hook wouldstand in itspath and thus interfere with its return movement. Accordingly, the anviland the plunger or other part by which the anvil is carried are formedto provide an articulated connection designed to permit the aforesaidretraction of the anvil from the throat of the clenched hook.

Although anvils for the purpose above set forth are made of hardenedsteel, it is necessary toreplace them with new ones at frequentintervals because of the harsh wear to which they are subjected by steellacinghooks and the heavy pressures required to clench such hooks. Thefrequent substitutions of new anvils for worn ones constitute aconsiderable itemof expense, a large proportion of which is due to thefact that as hereto fore constructed and as. illustrated in theabovementioned Letters Patent No. 811,840, each anvil has been providedwith a lug by 0 which an operating member may retract it from the throatof the clenched hook. The anvil is a thin, fiat plate which, consideredindividually, may be made at small expense, but when, as illustrated insaid Letters Patent, the anvil and the lug by which it is coupled to anoperating member are integral a new coupling element must be furnishedwith each new anvil.

In view of the conditions above set forth, an object of the presentinvention is to provide an improved construction that will reduce theexpense incidental to substituting new anvils for worn ones.

In accordance with this object a feature of the invention consists in animproved combination comprising an anvil and a coupling member formedwith cooperative interlocking portions and registering holes, a lockingmember formed to slide in said holes to lock the anvil. to the couplingmember, and resilient means arranged to maintain the locking member inlocking position. This construction provides for detaching a worn anviland substituting a new one without discarding the means by which theworn anvil is coupled to its operating member. Moreover, and as hereinillustrated, this feature provides for making the anvils of simple flatplates of generally rectangular configuration without any Serial No.373,314.

connecting lugs that would add to their cost of manufacture.

In the illustrated construction, the interlocking portions of the anvilandthe coupling member are so formed as to provide for inserting theanvil through the coupling member and withdrawing it therefrom withoutdisassembling thecoupling member and the operating member. As hereinillustrated the locking member and the resilient means above referred toare combined structurally to form a detachable key.

Referring to the accompanying drawings,

Fig. l is a left side elevation of a portion of a hook-inserting machineprovided with means embodying the novel features of the presentinvention;

Fig. 2 is a front elevation of an assemblage including an anvil, itscoupling member and a preferred form of detachable key compris ing alocking pin and a resilient clip permanently secured thereto;

Fig, 3 is a top plan View showing the anvil and the coupling member inassembled relation and showing the detachable key at an intermediatestage of attachment;

Fig.4 is a top plan view of the anvil alone;

Fig. 5 is a top plan view of the coupling member alone; 1

Fig. 6i's a top plan View of the key;

Fig. 7 is a side elevation of the key as shown in Fig. 1;

Fig. 8 is a front elevation of the key as shown in Fig. 2; and

Fig. 9 is a vertical section of the anvil and a lacing-hook seatedthereon.

The frame 10 of the machine is provided with bearings for a verticallymovable plunger 12 provided with a head 14. This head formed withhorizontal confronting grooves to receive opposite margins of a flathook-supporting anvil plate 16, which margins have straight paralleledges 17. One of said grooves is indicated at 18 in Fig. 1, Lacing-hooksare supplied to the anvil plate 16 by a raceway a portion of which isindicated at 20. Suitable mechanism (not shown) moves the plunger 12 upand down. The downstroke places the anvil 16 in hookreceiving positionin register with the lower end of the raceway and the up-stroke causesthe anvil to-insert a lacing-hook into an article of work supported bybut overhanging a punch-bed 22. A clenching tool 24 aflixed to avertically movable plunger 26 cooperates with the anvil 16 to insert andolench the barrel of the lacing-hook. The clenching tool 24 is providedwith a central pilot portion 28 that cooperates first with the punch-bed22 to punch a hole in the article of work for the reception of thebarrel of the hook. Suitable mechanism (not shown) is provided formoving the plunger 26 and the tool 24 laterally'from the punch-bed 22 toa position over and in register with the anvil '16 for the purpose offeeding the article of work and thereby spacing successive lacing-hooksinserted into the latter.

For the purpose of maintaining a lacing hook 15 in the desired positionon the anvil 16, as'shown in Fig. 9, the anvil is provided, asheretofore, with a notch 30 (Figs. 3 and 4) to be occupied by the neckthat connects the body and the head of a lacing-hook. In

accordance with common practice, the machine is provided with mechanismfor retracting the anvil 16 from the throat. of' a clenched hook so thatthe head of the hook will not obstruct the subsequent downward movementof the anvil to the raceway.

The illustrated mechanism for thus re tracting the anvil 16 issubstantially like the ters Patent N b.

correspondin mechanism shown in said Let- 811,840. It comprises anoperating member 50 telescopically connected to a lever 36 mounted on afulcrum pin 40. The lever 36 is provided with a roll 38 arranged to runon a cam 32, and is provided with a bore 42 containing a compressionspring 44 and a plunger 46 against which the spring acts. The lower endof the plunger 46 bears on a surface 48 of the frame 10 to maintain thecam-roll 38 in contact with the cam 32. The telescopic connectionbetween the lever 36 and the member 50 enables the latter to partake ofthe up-anddown movements imparted to the anvil 16 by the plunger 12.

The anvil 16 is connected to the operating member 50 by a couplingmember 52 from which the anvil is readily detachable. In formerconstructions the elements corresponding to the anvil 16 and the member52 have been integral, and it has therefore been necessary, whendiscarding a worn or broken anvil, to discard also itscoupling element.According to the present invention the anvil 16 and the coupling member52, while functionally integral, are structurally separable so thatwhenever it becomes necessary to replace an anvil with a new one, thecoupling niember 52 may be saved and utilized with the new anvil. Asshown in Figs. 2 and 3 the anvil and the coupling member are providedwith interlocking portions, parallel confronting grooves 54 being formedin the coupling member to receive the opposite longitudinal margins ofthe anvil. This construction provides flanges 56 on the cupling member52 to overlap said margins and bear on their upper surfaces.

Registering dowel-holes58 and 60 (Fi s. 4 and 5) are formed in the anviland in t e coupling member respectively toreceive a dowel-pin 53 (Figs.7 and 8) by which the anvil may be locked to the coupling member. Thispin is preferably provided with resilient means for maintaining it inlooking position so that it will neither drop therefrom nor rise intothe path of feeding movement of the work. Accordingly, as herein shown,the pin is provided with a clip 62 of resilient sheet metal, the pin andthe clip constituting a de tachable key. I

One end of the pin projects through and fits tightly in the clip, and ispreferably swaged to effect a rigid and permanent connection therewith.As shown in Figs. 3 and 6, the lateral dimension of the clip between theparallel edges 64 thereof is commensurate with the space between theconfronting edges of the flanges 56 formed on the coupling member 52, sothat when the dowel is forced home the clip will be seated on the uppersurface of the plate 16 between the flanges 56 and will be preventedfrom turning about the axis of the dowel. I The clip is provided with adownwardly extending resilient spring tongue 66 adjoining but ofi'setlaterally from its body portion. This tongue, as shown in Figs. 1 andifs 7, is bent at an angle corresponding to the angle of an inclinedundercut surface 68 formed on the coupling member 52. As shown in Fig. 1no part of the key projects above the level of the work-supportingsurface 22.

l Vhen the dowel-pin 53 is inserted into the holes in the anvil 16 andin the cou aling member 52, as shown in Fig. 3, the extremity of thetongue 66 engages the inclined surface 68 and thereby resists turningthe clip to place its edges 64: in parallelism with the confrontingedges of the flanges 56. Consequently, to force the dowel home it isnecessary to flex the tongue 66 by trimming the clip in a clockwisedirection until the edges 64 are parallel with the confronting edges ofthe flanges 56. When this parallel relation is effected the body of theclip 62 drops into the space be tween the flanges 56 and becomes seatedon the upper surface of the anvil 16, the inclination of the tongue 66and of the surface 68 being sufficient to cause the seating movement.lVhen the anvil plate, the coupling member 52 and the key are thusinterlocked the tongue 66 and the surface 68 are mantained incooperative relation by the flanges 54. At the same time the tongue 66and the surface 68 maintain the body of the clip seated on the anvilbetween the flanges 54 so that the upper em tremity of the key will notproject above the level of the work-supporting surface 22 (see Fig. 1).These reciprocal eflects combine to cause a firm gripping of thecoupling member 52 by the key.

As shown in Figs. 1, 2, 3 and 5, the coupling member 52 is provided witha lug 70 to form the operating connection with the operating member 50.Moreover, as shown in Fig. 2, in which the coupling member, the anviland the key are fully assembled, a small space is proided between theupper surface of the lug 70 and the confronting edge of the clip. Thisspace is sufficient to receive the tip of a screwdriver by which theclip may be pried upwardly to release it from the coupling member 52notwithstanding the resistance maintained by the spring tongue 66. Asthe head of the cli is raised above the level of the flanges 56, theclip is turned to the position shown. in Fig. 3, by the reaction of thetongue 66. Having thus released the clip from the coupling member 52 itis only necessary to withdraw the key with the fingers to detach it fromthe other parts. The anvil ma then be withdrawn endwise from theplunger-head l4 and from the coupling member 52 without detaching anyother part of the machine and a new anvil may be easily inserted in itsplace and secured by replacing the dowel as hereinbefore explained.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a hook-setting machine, an anvil formed to occupy the throat of alacing-hook,

a coupling member by which said anvil and an operating member may beconnected, said anvil and said coupling member having complementalinterlocking portions provided with registering holes, a locking memberformed to slide in said holes to lock the anvil to the coupling member,and resilient means arranged to maintain said locking member in lockingposition.

2. In a hook-setting machine, an anvil formed to occupy the throat of alacing-hook, a coupling member by which said anvil and an operatingmember may be connected, said anvil and said coupling member havingcomplemental interlocking portions provided with complementaldowel-holes, and a detachable key comprising a dowel and a resilientclip, the clip being formed to grip said coupling member to maintain thedowel in said holes.

3. In a hook-setting machine, an anvil formed to occupy the throat of alacing-hook, a coupling member by which said anvil and an operatingmember may be connected, said anvil and said coupling member havingcomplemental interlocking portions provided with complementaldowel-holes, and a detachable key comprising a dowel and a resilientclip, said coupling member having an undercut surface and said cliphaving a tongue arran ed to cooperate with said surface to maintain thedowel in said holes.

l. In a hook-setting machine, an anvil formed to occupy the throat of alacing-hook, a coupling member by which said anvil and an operatingmember may be connected, said coupling member and the anvil havingcomplemental dowel-holes, and a detachable key comprising a dowel andresilient clip secured to one end thereof, said clip and said couplingmember having cooperative portions formed and arranged to maintain aportion of the clip seated 011 the anvil, and said coupling memberhaving confronting flanges to overlap opposite margins of the anvil andto abut opposite edges of the clip and thereby prevent the clip fromturning about the axis of the dowel.

5. In a hook-setting machine, an anvil formed to occupy the throat of alacing-hook, a coupling member provided with confronting grooves toreceive opposite margins of said anvil and with a lug to form anoperating connection with an operating member, the anvil and thecoupling member having complemental dowel-holes, and a detachable keycomprising a dowel and a resilient clip secured to one end thereof, saidclip being formed to grip said coupling member, and a portion of theclip being arranged to lie adjacent to said lug and spaced therefrom sothat a small implement such as a screw-driver may be inserted betweenthem and operated to disengage the clip from the coupling member.

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6. In a hook-setting machine, an anvil formed to occupy the throat of alacing book, a carrier therefor provided with grooves in which the anvilis arranged to slide to and from its operative position, an operatingmember for moving said anvil to and from said position, a couplingmember by which said anvil and saidoperating memher are cperativelyconnected, said coupling member being provided with grooves throughwhich said anvil may be inserted to engage the grooves in said carrier,said anvil and said coupling member having cooperative holes arranged toregister when the parts are operatively assembled, a locking memberformed to slidein said holes to lock the anvil to the coupling member,and resiliont means arranged to maintain said locking member in lockingposition.

In testimony whereof I have signed my name to this specification. MELLENN. BRAY.

